# enthalpy

> English word · Noun · IPA /ˈɛn.θəl.piː/ · frequency rank #60,792

## Definitions
1. A measure of the heat content of a chemical or physical system.

## Etymology
From Ancient Greek ἐν- (en-, “in”) + θάλπω (thálpō, “to warm”). Coined by Dutch physicist Heike Kamerlingh Onnes, but first used in print by J. P. Dalton in 1909 in a paper titled "Researches on the Joule-Kelvin-effect, especially at low temperatures".

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/enthalpy